From patchwork Wed Aug 18 19:08:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 12445087 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5FBC5C432BE for ; Wed, 18 Aug 2021 19:09:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4198C60ED3 for ; Wed, 18 Aug 2021 19:09:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234145AbhHRTJf (ORCPT ); Wed, 18 Aug 2021 15:09:35 -0400 Received: from relmlor2.renesas.com ([210.160.252.172]:2486 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S233785AbhHRTJT (ORCPT ); Wed, 18 Aug 2021 15:09:19 -0400 X-IronPort-AV: E=Sophos;i="5.84,332,1620658800"; d="scan'208";a="91051835" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 19 Aug 2021 04:08:41 +0900 Received: from localhost.localdomain (unknown [10.226.93.61]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 7E61140D5D67; Thu, 19 Aug 2021 04:08:38 +0900 (JST) From: Biju Das To: "David S. Miller" , Jakub Kicinski Cc: Biju Das , Sergei Shtylyov , Geert Uytterhoeven , Sergey Shtylyov , Adam Ford , Andrew Lunn , Yuusuke Ashizuka , Yoshihiro Shimoda , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Chris Paterson , Biju Das , Prabhakar Mahadev Lad Subject: [PATCH net-next v3 9/9] ravb: Add tx_counters to struct ravb_hw_info Date: Wed, 18 Aug 2021 20:08:00 +0100 Message-Id: <20210818190800.20191-10-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210818190800.20191-1-biju.das.jz@bp.renesas.com> References: <20210818190800.20191-1-biju.das.jz@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The register for retrieving TX counters is present only on R-Car Gen3 and RZ/G2L; it is not present on R-Car Gen2. Add the tx_counters hw feature bit to struct ravb_hw_info, to enable this feature specifically for R-Car Gen3 now and later extend it to RZ/G2L. Signed-off-by: Biju Das Reviewed-by: Lad Prabhakar Reviewed-by: Andrew Lunn Reviewed-by: Sergey Shtylyov --- v2->v3: * Retained Rb tag from Andrew, since change is just renaming the variable and comment update. v2: * Incorporated Andrew and Sergei's review comments for making it smaller patch and provided detailed description. --- drivers/net/ethernet/renesas/ravb.h | 1 + drivers/net/ethernet/renesas/ravb_main.c | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index 65a13ad458e6..37ad0f8aaf3c 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -1000,6 +1000,7 @@ struct ravb_hw_info { /* hardware features */ unsigned internal_delay:1; /* AVB-DMAC has internal delays */ + unsigned tx_counters:1; /* E-MAC has TX counters */ }; struct ravb_private { diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 2fe4b9231523..02842b980a7f 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -1632,13 +1632,14 @@ static u16 ravb_select_queue(struct net_device *ndev, struct sk_buff *skb, static struct net_device_stats *ravb_get_stats(struct net_device *ndev) { struct ravb_private *priv = netdev_priv(ndev); + const struct ravb_hw_info *info = priv->info; struct net_device_stats *nstats, *stats0, *stats1; nstats = &ndev->stats; stats0 = &priv->stats[RAVB_BE]; stats1 = &priv->stats[RAVB_NC]; - if (priv->chip_id == RCAR_GEN3) { + if (info->tx_counters) { nstats->tx_dropped += ravb_read(ndev, TROCR); ravb_write(ndev, 0, TROCR); /* (write clear) */ } @@ -1937,6 +1938,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = { .stats_len = ARRAY_SIZE(ravb_gstrings_stats), .max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1, .internal_delay = 1, + .tx_counters = 1, }; static const struct ravb_hw_info ravb_gen2_hw_info = {